Open AccessHilbert-Huang processing for single-exposure two-dimensional grating interferometry
Author(s) -
Maciej Trusiak,
Krzysztof Patorski,
Krzysztof Pokorski
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028359
Subject(s) - hilbert–huang transform , optics , grating , interferometry , hilbert transform , hilbert spectral analysis , computer science , demodulation , image processing , algorithm , artificial intelligence , physics , computer vision , computer network , channel (broadcasting) , filter (signal processing) , image (mathematics)
Single-shot crossed-type fringe pattern processing and analysis method called Hilbert-Huang grating interferometry (HHGI) is proposed. It consist of three main procedures: (1) crossed pattern is resolved into two fringe families using novel orthogonal empirical mode decomposition approach, (2) separated fringe sets are filtered using modified automatic selective reconstruction aided by enhanced fast empirical mode decomposition and mutual information detrending, and (3) Hilbert spiral transform is employed for fringe phase demodulation. Numerical and experimental studies corroborate the validity, versatility and robustness of the proposed HHGI technique. It can be successfully applied to multiplicative and additive type crossed patterns with sinusoidal and binary orthogonal component structures. Efficient adaptive filtering enables successful fast processing and analysis of complex and defected patterns.